【作者】 吴斌； 王彦锋； 顾林豪； 何元春；

【Author】 Wu Bin~1 Wang Yanfeng~1 Gu Linhao~1 He Yuanchun~2 (1.The Technical Research Institute of Shougang,Beijing,100043; 2.Shouqin Company,Qinhuangdao,066326)

【机构】 首钢技术研究院； 秦皇岛首秦金属材料有限公司；

【摘要】 采用控轧+正火工艺,在4300 mm宽厚板生产线成功开发了欧标正火可焊接细晶粒结构钢S420NL。S420NL成分采用Nb、V、Ti复合处理,试制钢板正火后屈服强度高于410 MPa,抗拉强度高于550 MPa,-50℃低温横纵冲击功均大于140J。试制的S420NL钢板成分设计、工艺路线合理,性能优良。更多还原

【Abstract】 The normalized weldable fine grain structural steel S420NL for European standard was successfully exploited by control rolling and normalizing technology on 4300 mm wide heavy plates’ production line.The steel plates’ composition was designed to contain Nb,V,Ti.The yield and tensile strength of normalizd steel plates are over 410 MPa and 550 MPa respectively.The transversal and longitudinal low-temperature impact at-50℃is over 140J.It is found that S420NL steel plates exploited have reasonable composition,processing steps,and excellent performance.更多还原